Cutter-head.



W. M. TAGART.

CUTTER HEAD.

APPLICATKON FILED AUG-I7. 1914.

1,149,304, I Patented Aug. 10, 1915.

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WHITFIELD M. TAGART, osMALvnsN, nexansas, Assrenonor ONE-HALFTO SAMUELB1. SULLINBEB-G-ER OF MALVERN, ARKANSAS.

cnrrnn n'snn Application filed August'li, 1914.

To allwlmm it may concern:

Be it known that I; WVHITFIELD M. TAG,- ART, a citizen of theUnitedstates, residing at liilalvern, "in the county of Hot Springs andStateof Arkansas, have invented a new and useful Cutter-Heath of whichthe following IS a speclfication. P

The device forming the subject matter of this application 1s a'cutterhead adapted to be used on planing machines for dressing lumber and forcuttinginoldings and other special. shapes. 1 k One object of thepresent invention isto provide novel means whereby the cutting bladesmay be held in place without resort inn to securing bolts. I 5 I Anotherobject of the inventionis to provide novel means whereby the blades aresupported in their central portions? Another object of the invention isto pro- 'vide novel means whereby the blades may be of devices of thattype to which the present details of construction hereinafter describedand claimed. it being understood that changes in thejpreciseeinbodiinent of the invention herein disclosed canobe made withinthescope of w iat is claimed without departing from the spirit of "theinvention.

In the accompanying drawingFigui-e 1 shows the inventionin sideelevation parts being broken away; F '2 is a longitudinal sectionrFig. 3is a cross sectionon the line 33 of Fig. Fig. 4. is a perspectiveviewdepictingone of the blades; F 5 is a side elevation showing amodified,yforin of the invention, the blades being omitted.

In carrying out the present" invention thcrc is provided a tubularsocket or shaft denoted by the numeral 1 "and equipped at one end with ahead 2 havingnotches 8 in its periphery. Betweenthe'n'otches 3, theinneredge of the'headQ is under cut as shown at 41 to define overhangingflanges 5. At its opposite end the shaftl is threaded asshown at 6. Theshaft is provided adjacent the head72 with a longitudinally extended keyseat Specification of Letters Patent,

ery," the retaining dish demand. and are provided with transverse teeth21 Patented An. 10, 1915. Serial no. 857,228.

gurrounding the shaft 1 and located adjacent the head 2 is an annularcutter support 8 having notches 9 adapted to line up with the notches 3in the head 2. Intermediate the notches 9, the periphery of the cuttersupport 8 is fashioned into a plurality of bladesupporting tables 10having transverse teeth or corrugations 11. The cutter support 8 isequipped with a key seat 1'2 adapted to receive a key 1 1- lodged. inthe lrcy seat 7 of the shaft 1.

Surrounding the shaft 1 is a retaining disk having notches 16 in itsperiphery which line up with the notches 3 and in the head and in thecutter support 8 respectively. Upon its inner face and adjacent itsperiph- 15 is undercut as shown at 17 to define overhanging flanges 18.The retaining disk 15 is supplied with a key'seat 19 receiving one'endof the key 14.

ri plurality of blades 20 are provided, and these blades will be shapedas the work inay The blades 20 rest on the tables 10 which interfit withthe teeth 11 on the tables. At their ends, the blades 20 are beveled asshown atQQ, so as to fit beneath the overhanging flanges 5 and 18 of thehead 2 and the retaining dish 15 respectively. The cutting edges oftheblades are indicated at 23 money be shaped asdesired.

h ii'eadcd onto the portion 6 of the shaft 1 Emit is necessary to backthe nut or collar away from the retaining disk 15 so as to release thehold of the head 2 and the retaining disl; on the edges of the blades.The blades then may be removed or may be adjusted c'ircuniferentially ofthe cutter supupon the tables 11, the interfitting corru, ions orteethf2111 serving to hold 7 the blades in position after adjustment.

t is to be observedthat the collar or nut constitutes, aneilicient meansfor moving the dislrlfi toward thehead 2, to bind and retain the blades;through-bolts and other' eouivalentstructures being dispensed with.

The blades 20 not only are supported along their edges,- but, referringto Fig. 2, it will be observed that the element '8 sup gorge the bladesbetween the disk 15 and the isa nut or collar 24 adapted to bear againsti Referring to Fig. 5, the shaft is shown at 25, the head at 26, thesupports at 27, the retaining disk at 30 and the nut at'31. Between thesupports'27 is interposed a spacing disk 2-8 which is under cut at 29atits periphery and upon both sides to receive the edges of the blades,the, structure shown in Fig. 5 being employed when more than one set ofcutters is used. The spacing disk 28 may be considered as a retaininghead so far as are concernedthose blades which lie between the spacingdisk 28 and the retaining disk 30. Therefore, in both forms of theinvention there is disclosed a shaft having a head, a retaining disk onthe shaft, a blade bound between the head and the retaining disk, and anut threaded on the shaft and head for adj ustment toward and away froma is claimed is -exerting a pressure against the retaining disk. V i VHaving thus described the invention,what

' 1. Ina device of the class described, a shafthaving a head a retainingdisk on the shaft and adjustable toward and away from the head; anannular cutter support 'on the shaft between the head and the disk; anda blade resting on the support, the blade and the support havinginterfitting teeth extended longitudinally of the'shaft and serving tohold the bladein adjusted positions against movement circumferentiallyof the shaft, the disk and thehead upon'the' one hand and the blade uponthe other hand being provided with mutually interengaging faces inclinedlongitudinally of the shaft and coacting to move the blade toward thecenter of the shaft thereby to hold the teeth of the, blade'a-nd thesupport interengaged when the disk is moved't'oward the head, the diskbeing movable away from the head thereby to permit the teeth of theblade and of the support to be disengaged and to permit the blade to 2.In a device of the class described, a shaft having a head; a diskmounted onthe thehead; a support located on the shaft between thediskand the head and movable toward and away from thehead; a blade upheld bythe supp'ort and clamped between the disk and :the head; the blade, the.support and the disk having peripheral notches,

' and the notch in the support lying beneath, the working edge of'theblade; and a shaft carried key engaging 'the'support and the diskto holdthe same against rotation therej key be adjusted circumferen tially ofthe shaft.

by to aline all of the notches and to cause the same to form acontinuous, chip-discharg the threaded portion of the shaft and ,the'

head; a removable key in the seat and held against endwise movementtherein; a disk on the shaft and having a seat receiving the a nut onthe threaded portion of the shaft and engagingithe disk, one end of thekey being spaced from the nut; a support on the shaft between the headand the disk and I having a key receiving seat; and a blade upheld bythe support and clamped between the disk and the head. I V

V 4. In .a device oftheclass described, a

shaft having a head; a disk mounted on'the shaft for adjustment towardand away from the head; a support locatedon the shaft between the diskandthe head and movable toward and away from the head; a blade upheld bythe support; the blade, the support and the disk having and the 'notchin the support lying beneath the working edge of'the blade; a shaftcarried key engaging the support and the disk to hold the sameagainstrotation, thereby to aline all'of' the notches and to cause theperipheral notches same to form acontinuous chip discharging channel;the blade and the support having interfitting teeth extendedlongitudinally of the shaft and servingto hold'the blade in adjustedpositions against movement circumferentially of the shaft, the disk andthe head upon the oneliand and the blade upon the other hand beingprovided with mutually engaged faces inclined longitudinally of'theshaft and coacting to movev the blade toward the'center of the shaftthereby to hold the teeth of the blade and the support inter-engagedwhen the diskis moved toward the head, the disk being movable away fromthe head thereby to permit the teeth of the blade and the support to bedisengaged and to permit an adjustment of the blade circumferentially ofthe shaft. 7 V, V

In testimony that I claim the foregoing as my own, I have hereto aiiixedmy signature in the presence of two witnesses.

vWitnesses: v

DAVID J. Po'r'rs,

J. H. ROSEBERRY..

. Copies (if this pate' nt may beobtainedfiirfive cents each, byaddressingthe Commissioner of Patent a Washington, D. C.

WHITFIELD M. TAGART.

